Its erosivity is usually estimated by the product of rain kinetic energy times the biggest rain density during a certain period, and also, can be determined by the daily rainfall amount.
降雨是影响土壤侵蚀的主要因素，降雨侵蚀力通常用降雨动能和一段时间的最大雨强的乘积表示，简化的计算也可用日降雨量估算。
The fear is that melting ice, along with increased snow and rain, could reduce the density and salinity of the top layers of the sea, making them more buoyant.
人们担忧的是正在融化的冰和不断增加的雨雪可能降低海洋表层水体的密度和盐度，导致其更容易滞留在海洋表层。
The Airparif monitoring agency said smog density was still near alert levels Monday, but rain forecast for Tuesday was expected to clear the air.
空气监测机构表示，周一雾霾浓度仍然处于警戒水平，但是预计周二的降雨能够净化空气。
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